Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-12-26
1992-06-16
LaRoche, Eugene R.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307455, 307269, H03K 1900
Patent
active
051226944
ABSTRACT:
The present invention is a method and an electrical circuit (28 and 50) for effectively eliminating the effects of time jitter caused by metastable states by rejecting measurements made under timing conditions that could lead to the development of metastable states. In a preferred embodiment, the circuit of the invention effectively eliminates time jitter caused by metastable states in digital oscilloscope circuitry by determining in advance the timing conditions that can lead to such jitter and detecting whenever the transitions of trigger and trigger hold-off signals meet such timing conditions. The circuit then generates a "possible metastable" signal that can be used by the oscilloscope circuitry, or by the controlling software, to reject any measurement made under those timing conditions.
REFERENCES:
patent: 4495586 (1985-01-01), Andrews
patent: 4499386 (1985-02-01), Schlotzhauer et al.
patent: 4797572 (1989-01-01), Metz
patent: 4888588 (1989-12-01), Castagnozzi
patent: 4982118 (1991-01-01), Lloyd
patent: 5017814 (1991-05-01), Lloyd
Bradford Jeffrey O.
Spehn Richard W.
Angello Paul S.
Griffith Boulden G.
LaRoche Eugene R.
Neyzari Ali
Tektronix Inc.
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